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What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)

Which graph of a hyperbola represents the equation 16x^2-y^2=16